Portola Valley, California
E242763
Portola Valley, California is a small, affluent residential town in the San Francisco Bay Area known for its rural character, open space preserves, and scenic foothill setting.
All labels observed (6)
How this entity was disambiguated
This entity first appeared as the object of triple T507168 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Portola Valley, California Context triple: [San Mateo County, California, hasTown, Portola Valley, California]
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A.
El Sobrante, California
El Sobrante, California is an unincorporated suburban community in the San Francisco Bay Area known for its residential neighborhoods and proximity to Richmond and other East Bay cities.
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B.
Los Altos
Los Altos is an affluent residential city in California’s San Francisco Bay Area, known for its quiet suburban character and proximity to major Silicon Valley tech hubs.
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C.
Mill Valley, California
Mill Valley, California is a small, affluent city in Marin County just north of San Francisco, known for its redwood forests, scenic hills, and vibrant arts and outdoor culture.
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D.
Palo Alto, California
Palo Alto, California is a major Silicon Valley city known for its role as a global technology and innovation hub and as the home of Stanford University.
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E.
Menlo Park, California
Menlo Park, California is a city in Silicon Valley known as a hub for technology and venture capital, home to major research institutions and tech companies.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Portola Valley, California Target entity description: Portola Valley, California is a small, affluent residential town in the San Francisco Bay Area known for its rural character, open space preserves, and scenic foothill setting.
-
A.
El Sobrante, California
El Sobrante, California is an unincorporated suburban community in the San Francisco Bay Area known for its residential neighborhoods and proximity to Richmond and other East Bay cities.
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B.
Los Altos
Los Altos is an affluent residential city in California’s San Francisco Bay Area, known for its quiet suburban character and proximity to major Silicon Valley tech hubs.
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C.
Mill Valley, California
Mill Valley, California is a small, affluent city in Marin County just north of San Francisco, known for its redwood forests, scenic hills, and vibrant arts and outdoor culture.
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D.
Palo Alto, California
Palo Alto, California is a major Silicon Valley city known for its role as a global technology and innovation hub and as the home of Stanford University.
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E.
Menlo Park, California
Menlo Park, California is a city in Silicon Valley known as a hub for technology and venture capital, home to major research institutions and tech companies.
- F. None of above. chosen
Statements (49)
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Portola Valley, California Description of subject: Portola Valley, California is a small, affluent residential town in the San Francisco Bay Area known for its rural character, open space preserves, and scenic foothill setting.
Referenced by (29)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Los Altos Hills, California, United States
linked to: Portola Valley, California
linked to: Portola Valley, California
linked to: Portola Valley, California
linked to: Portola Valley, California
subject linked to:
Interstate 280 (nearby)
subject linked to:
Woodside
linked to: Portola Valley, California
linked to: Portola Valley, California
linked to: Portola Valley, California
linked to: Portola Valley, California
linked to: Portola Valley, California
linked to: Portola Valley, California